Measurement of the B+/B0 Production Ratio from the UPSILON(4S) Meson Using B+ -] J/Psi K+ and B0 -] J/Psi K0{sub S} Decays PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages : 8
Book Description
We report a measurement of the production ratio of charged and neutral B mesons from [Upsilon](4S) decays based on the ratio of efficiency-corrected yields for the charmonium modes J/[psi] K and J/[psi] K{sub s}° with 81.9 fb−1 of data collected with the BABAR detector on the [Upsilon](4S) resonance at 10.580 GeV. We find a value of 1.006 ± 0.036(stat) ± 0.031(sys) for the ratio R{sup +/0} = [Lambda]([Upsilon](4S) 2!BB−)/[Lambda]([Upsilon](4S) 2!B°{bar B}°).
Author: Publisher: ISBN: Category : Languages : en Pages : 8
Book Description
We report a measurement of the production ratio of charged and neutral B mesons from [Upsilon](4S) decays based on the ratio of efficiency-corrected yields for the charmonium modes J/[psi] K and J/[psi] K{sub s}° with 81.9 fb−1 of data collected with the BABAR detector on the [Upsilon](4S) resonance at 10.580 GeV. We find a value of 1.006 ± 0.036(stat) ± 0.031(sys) for the ratio R{sup +/0} = [Lambda]([Upsilon](4S) 2!BB−)/[Lambda]([Upsilon](4S) 2!B°{bar B}°).
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The authors report a study of the B meson decays, B[sup+][yields] J/[psi][phi]K[sup+], B[sup 0][yields] J/[psi][phi]K[sub S][sup 0], B[sup 0][yields] J/[psi][phi], B[sup 0][yields] J/[psi][eta] and B[sup 0][yields] J/[psi][eta][prime] using 56 million B[bar B] events collected at the[Upsilon](4S) resonance with the BABAR detector at the PEP-II e[sup+]e[sup -] asymmetric-energy storage ring. They measure the branching fractions[Beta](B[sup+][yields] J/[psi][phi]K[sup+])= (4.4[+-] 1.4(stat)[+-] 0.5(syst)) x 10[sup -5] and[Beta](B[sup 0][yields] J/[psi][phi]K[sub S][sup 0])= (5.1[+-] 1.9(stat)[+-] 0.5(syst)) x 10[sup -5], and set upper limits at 90% confidence level for the branching fractions[Beta](B[sup 0][yields] J/[psi][phi])
Author: Paul W. Balm Publisher: ISBN: Category : Languages : en Pages : 138
Book Description
This thesis describes a measurement of the B{sub d}{sup 0} lifetime in the decay to (J/{psi}K{sub S}{sup 0}), using 114 pb{sup -1} of data collected by the D0 experiment at the Tevatron from October 15, 2002, to June 10, 2003. The measurement is motivated by the tests of the Standard Model that it makes possible. These include tests of Heavy Quark Effective Theory predicting B-meson lifetimes, and of the complex phase in the CKM-matrix as the source of CP-violation in B{sub d}{sup 0} decays to (J/{psi}K{sub S}{sup 0}).
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
During the first year of data taking, the 1999-2000 run, the BABAR detector at the SLAC PEP-II asymmetric collider has collected an integrated luminosity of 20.7 fb[sup -1] corresponding to 22.7 million B[bar B] pairs at the[Upsilon](4S) resonance. Using this data, we present the measurement of sin2[beta] based on samples of B[sup 0][yields] J/[psi] K[sub S][sup 0], B[sup 0][yields][psi](2S) K[sub S][sup 0] and B[sup 0][yields] J/[psi] K[sub L][sup 0] L decays. Our measured value is sin2[beta]= 0.34[+-] 0.20 (stat)[+-] 0.05 (syst). In addition we report on the measurement of branching fractions for exclusive B decays to charmonium final states, measurements of charged and neutral B meson lifetimes and also the B[sup 0][bar B][sup 0] oscillation frequency.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Using 8.5M BB events recorded by the BABAR detector the yield of inclusive J[psi], the branching ratios of[psi](2S) and x[sub c] are presented. Combining the charmonium state with either a K[sup+-], K[sub s][sup 0], K*[sup+-] exclusive B decays are reconstructed and their branching ratios determined. Using the fully reconstructed decays, both the B[sup 0] B[sup+-] masses and their difference is measured. Finally the contributions of CP even and odd amplitudes in the decay B[yields] J/[psi] K* are determined from an angular analysis.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
We report branching fraction measurements for exclusive decays of charged and neutral B mesons into two-body final states containing a charmonium meson. We use a sample of 22.72[+-] 0.36 million B[bar B] events collected between October 1999 and October 2000 with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. The charmonium mesons considered here are J/[psi], [psi](2S), [chi][sub c1], and the light meson in the decay is either a K, K*, or[pi][sup 0].
Author: Publisher: ISBN: Category : Languages : en Pages : 4
Book Description
We discuss the physics of B{sub s}° mesons focusing on CP violation in B{sub s}° → J/[Psi][phi] decays at the Tevatron. We summarize measurements of the properties of bottom baryons at the Tevatron including the [Sigma]{sub b} states and the [Xi]{sub b}− baryon. We also discuss the discovery of the [Omega]{sub b}− baryon.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The authors report preliminary results on the measurement of branching fractions of exclusive decays of neutral and charged B mesons into two-body final states containing a charmonium state and a light strange meson. The charmonium mesons considered are J/[psi], [psi](2S) and [chi][sub c1], and the light mesons are either K or K*. They use a sample of about 124 million B[bar B] events collected with the BABAR detector at the PEP-II storage ring at the Stanford Linear Accelerator Center.
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Author: ![Measurement of the B+/B0 Production Ratio from the UPSILON(4S) Meson Using B+ -] J/Psi K+ and B0 -] J/Psi K0{sub S} Decays PDF](https://books.google.com/books/content/images/frontcover/MBGsAQAACAAJ?fife=w80-h100)
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